- aerial survey
A method of gathering information on surface fish movement and density by visual observation and photography from low-flying aircraft.
Fisheries — dictionary. Aardward. 2004.
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Aerial survey — is a geomatics method of collecting information by utilising aerial photography or from remote sensing imagery using other bands of the electromagnetic spectrum, such as infrared, gamma, or ultraviolet. It can also refer to the chart or map made… … Wikipedia
aerial survey — noun : a survey utilizing aerial photographs * * * 1. a survey made from above, as from an aircraft, a high point, etc. 2. a survey that maps an area by means of aerial photography, photogrammetry, and the like. [1915 20] * * * aerial survey, a… … Useful english dictionary
aerial survey — aerial photography … English contemporary dictionary
aerial survey — 1. a survey made from above, as from an aircraft, a high point, etc. 2. a survey that maps an area by means of aerial photography, photogrammetry, and the like. [1915 20] * * * … Universalium
aerial survey — i. The use of aerial cameras and/or other photogrammetric instruments for making maps and charts. ii. The visual survey of the ground or an objective from the air, usually to assess damage during natural or human made calamities … Aviation dictionary
aerial survey — noun a method of collecting information by utilizing aerial photography. or from remote sensing technology using other bands of the electromagnetic spectrum, such as infrared, gamma ray, or … Wiktionary
aerial survey — a method of gathering information on fish shoal movement and density by visual observation and photography from low flying aircraft … Dictionary of ichthyology
Aerial topdressing — is the spreading of fertilisers such as superphosphate over farmland with the use of aircraft. Aerial topdressing was developed in New Zealand in the 1940s and was rapidly adopted elsewhere in the 1950s. For more general information about… … Wikipedia
Survey — may refer to:Geography*Surveying, the technique and science of measuring positions and distances on Earth *Aerial survey, a method of collecting information using aerial photography *Cadastral survey, used to document land ownership, by the… … Wikipedia
Aerial photography — is the taking of photographs of the ground from an elevated position. The term usually refers to images in which the camera is not supported by a ground based structure. Cameras may be hand held or mounted, and photographs may be taken by a… … Wikipedia